If player 1 holds AA, the probability that player B has AA is?

[meow_meow]

It's something you see sometimes - two players both holding AA on the same hand. A little unusual, but nothing to write home about.
Anyway, just now I saw it happen on a 400NL 6max table - 3 players all-in preflop: AA vs AA vs KK.
Ok, no biggie - nobody at the table even makes a comment.
Anyway, 15 hands later it happens again. Same two players who had AA before go all-in preflop. Again, both have AA. Just a strange coincidence I'm sure.
In the 110k hands in my PT database, I've never had my aces run into another pair. Weird.


Sorry for the time waster